libgender/util.h

#ifndef UTIL_H
#define UTIL_H

#include <cmath>
#include <vector>
#include <list>
#include <map>
#include "callback.h"

using namespace std;

#include <GL/gl.h>

typedef int soffs; // 32 bit
typedef unsigned int uoffs;
#define OFFS_BITS 31
#define SOFFS_MIN (soffs)-(1 << (OFFS_BITS - 2))
#define SOFFS_MAX (soffs)+(1 << (OFFS_BITS - 2))
#define MAXEXTENT (1UL << (OFFS_BITS - 1))

#define GLFLOAT_MAX 1e30
#define GLFLOAT_MIN -1e30

struct vec3 {
  GLfloat x, y, z;
  vec3 () { };
  vec3 (GLfloat x, GLfloat y, GLfloat z) : x(x), y(y), z(z) { };

  const vec3 operator -() const
  { return vec3 (-x, -y, -z); }
};

const vec3 normalize (const vec3 &v);
const vec3 cross (const vec3 &a, const vec3 &b);

inline const vec3 operator *(const vec3 &a, GLfloat s)
{
  return vec3 (a.x * s, a.y * s, a.z * s);
}

inline GLfloat dot (const vec3 &a, const vec3 &b)
{
  return a.x * b.x + a.y * b.y + a.z * b.z;
}

inline const GLfloat abs (const vec3 &v)
{
  return sqrtf (dot (v, v));
}

struct gl_matrix {
  GLfloat data[4][4];

  const GLfloat operator ()(int i, int j) const { return data[i][j]; };
  GLfloat &operator ()(int i, int j) { return data[i][j]; };

  void diagonal (GLfloat v);
  void clear () { diagonal (0.); };
  void identity () { diagonal (1.); };

  void print (); // ugly

  void translate (const vec3 &v);
  void rotate (GLfloat degrees, const vec3 &axis);

  gl_matrix () { };
  gl_matrix (GLfloat diag) { diagonal (diag); };
};

const gl_matrix operator *(const gl_matrix &a, const gl_matrix &b);
const vec3 operator *(const gl_matrix &a, const vec3 &v);

typedef vec3 point;

// a generic plane
class plane {
  vec3 n;
  GLfloat d;
public:

  GLfloat distance (const point &p) const
  {
    return dot (n, p) + d;
  }

  plane () { };
  plane (GLfloat a, GLfloat b, GLfloat c, GLfloat d);
};

struct sector {
  soffs x, y, z;

  sector (soffs x = 0, soffs y = 0, soffs z = 0) : x(x), y(y), z(z) { };

  void offset (int subindex, uoffs extent)
  {
    if (subindex & 1) x += extent;
    if (subindex & 2) y += extent;
    if (subindex & 4) z += extent;
  }
};

inline const sector translate (const sector &p, const sector &src, const sector &dst)
{
  sector r;

  r.x = p.x + (dst.x - src.x);
  r.y = p.y + (dst.y - src.y);
  r.z = p.z + (dst.z - src.z);

  return r;
}

void renormalize (sector &s, point &p);

struct colour {
  GLfloat r, g, b, a;
  colour (GLfloat r = 1., GLfloat g = 1., GLfloat b = 1., GLfloat a = 1.) : r(r), g(g), b(b), a(a) { };
};

struct texc {
  GLfloat s, t;
  texc () { };
  texc (GLfloat s, GLfloat t) : s(s), t(t) { };
};

struct box {
  sector a, b;

  box() { };

  void reset ()
  {
    a = sector (SOFFS_MAX, SOFFS_MAX, SOFFS_MAX);
    b = sector (SOFFS_MIN, SOFFS_MIN, SOFFS_MIN);
  }

  void add (const box &o);
  void add (const sector &p);
  void add (const point &p);
};

inline const box translate (const box &b, const sector &src, const sector &dst)
{
  box r;

  r.a = translate (b.a, src, dst);
  r.b = translate (b.b, src, dst);

  return r;
}

struct light {
  point p;
  colour c;
  GLfloat intensity;
  GLfloat radius;
};

struct material {
  colour diffuse, specular, emission;
  GLfloat shininess;
};

struct entity_base;
struct draw_context;

extern struct timer {
  static double now;
  static double diff;

  static void frame ();
  timer ();
} timer;

#define MAX_EVENT_TYPES 10
enum event_type { TIMER_EV };
struct event {
   event_type type;
};

typedef callback1<void, event&> event_cb;

class skedjuhlar {

   public:
// only 10 types for now
   private:
      vector <list<event_cb> > event_lists;
   
   public:
      skedjuhlar () {
         event_lists.resize (MAX_EVENT_TYPES, list<event_cb>());
      }
      
      void register_event_cb (const event_type &t, const event_cb &e) {
         event_lists[t].push_back (e);
      };
      void send_event (event &e) {
         list<event_cb> &l = event_lists[e.type];
         for (list<event_cb>::iterator it = l.begin (); it != l.end (); it++) {
            (*it)(e);
         }
      };
      /*
      void check_events () {
         while (!events.empty ()) {
            event &e = events.pop_front ();
            list<event_cb> &l = event_lists[e->name];
            for (list<event_cb>::iterator it = l.begin (); it !+ l.end (); it++) {
               (*it)(e);
            }
            delete e; // ugly slow? hai hai..... 183G
         }
      }
      */
};

extern skedjuhlar main_scheduler;

#endif

Revision:	1.11
Committed:	Mon Oct 4 16:03:49 2004 UTC (19 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.10:	+48 -0 lines
Log Message:	added some simple scheduler and events
#	User	Rev	Content
1	root	1.1	#ifndef UTIL_H
2			#define UTIL_H
3
4	root	1.7	#include <cmath>
5	root	1.1	#include <vector>
6	root	1.11	#include <list>
7			#include <map>
8			#include "callback.h"
9	root	1.1
10			using namespace std;
11
12	root	1.7	#include <GL/gl.h>
13
14	root	1.3	typedef int soffs; // 32 bit
15			typedef unsigned int uoffs;
16	root	1.4	#define OFFS_BITS 31
17	root	1.9	#define SOFFS_MIN (soffs)-(1 << (OFFS_BITS - 2))
18			#define SOFFS_MAX (soffs)+(1 << (OFFS_BITS - 2))
19			#define MAXEXTENT (1UL << (OFFS_BITS - 1))
20	root	1.1
21			#define GLFLOAT_MAX 1e30
22			#define GLFLOAT_MIN -1e30
23
24			struct vec3 {
25			GLfloat x, y, z;
26			vec3 () { };
27			vec3 (GLfloat x, GLfloat y, GLfloat z) : x(x), y(y), z(z) { };
28
29			const vec3 operator -() const
30			{ return vec3 (-x, -y, -z); }
31			};
32
33			const vec3 normalize (const vec3 &v);
34			const vec3 cross (const vec3 &a, const vec3 &b);
35	root	1.6
36			inline const vec3 operator *(const vec3 &a, GLfloat s)
37			{
38			return vec3 (a.x * s, a.y * s, a.z * s);
39			}
40
41			inline GLfloat dot (const vec3 &a, const vec3 &b)
42			{
43			return a.x * b.x + a.y * b.y + a.z * b.z;
44			}
45
46			inline const GLfloat abs (const vec3 &v)
47			{
48			return sqrtf (dot (v, v));
49			}
50	root	1.1
51	root	1.5	struct gl_matrix {
52			GLfloat data[4][4];
53
54			const GLfloat operator ()(int i, int j) const { return data[i][j]; };
55			GLfloat &operator ()(int i, int j) { return data[i][j]; };
56
57			void diagonal (GLfloat v);
58			void clear () { diagonal (0.); };
59			void identity () { diagonal (1.); };
60
61			void print (); // ugly
62
63			void translate (const vec3 &v);
64	root	1.6	void rotate (GLfloat degrees, const vec3 &axis);
65	root	1.5
66			gl_matrix () { };
67			gl_matrix (GLfloat diag) { diagonal (diag); };
68			};
69
70			const gl_matrix operator *(const gl_matrix &a, const gl_matrix &b);
71	root	1.6	const vec3 operator *(const gl_matrix &a, const vec3 &v);
72	root	1.10
73			typedef vec3 point;
74
75			// a generic plane
76			class plane {
77			vec3 n;
78			GLfloat d;
79			public:
80
81			GLfloat distance (const point &p) const
82			{
83			return dot (n, p) + d;
84			}
85
86			plane () { };
87			plane (GLfloat a, GLfloat b, GLfloat c, GLfloat d);
88			};
89
90			struct sector {
91			soffs x, y, z;
92
93			sector (soffs x = 0, soffs y = 0, soffs z = 0) : x(x), y(y), z(z) { };
94
95			void offset (int subindex, uoffs extent)
96			{
97			if (subindex & 1) x += extent;
98			if (subindex & 2) y += extent;
99			if (subindex & 4) z += extent;
100			}
101			};
102
103			inline const sector translate (const sector &p, const sector &src, const sector &dst)
104			{
105			sector r;
106
107			r.x = p.x + (dst.x - src.x);
108			r.y = p.y + (dst.y - src.y);
109			r.z = p.z + (dst.z - src.z);
110
111			return r;
112			}
113
114			void renormalize (sector &s, point &p);
115
116			struct colour {
117			GLfloat r, g, b, a;
118			colour (GLfloat r = 1., GLfloat g = 1., GLfloat b = 1., GLfloat a = 1.) : r(r), g(g), b(b), a(a) { };
119			};
120	root	1.5
121	root	1.1	struct texc {
122			GLfloat s, t;
123			texc () { };
124			texc (GLfloat s, GLfloat t) : s(s), t(t) { };
125			};
126
127			struct box {
128	root	1.8	sector a, b;
129
130			box() { };
131	root	1.1
132			void reset ()
133			{
134	root	1.9	a = sector (SOFFS_MAX, SOFFS_MAX, SOFFS_MAX);
135			b = sector (SOFFS_MIN, SOFFS_MIN, SOFFS_MIN);
136	root	1.1	}
137
138			void add (const box &o);
139	root	1.8	void add (const sector &p);
140	root	1.1	void add (const point &p);
141			};
142	root	1.5
143			inline const box translate (const box &b, const sector &src, const sector &dst)
144			{
145			box r;
146
147			r.a = translate (b.a, src, dst);
148			r.b = translate (b.b, src, dst);
149
150			return r;
151			}
152	root	1.1
153			struct light {
154			point p;
155			colour c;
156			GLfloat intensity;
157			GLfloat radius;
158	root	1.2	};
159
160			struct material {
161			colour diffuse, specular, emission;
162			GLfloat shininess;
163	root	1.1	};
164
165	root	1.4	struct entity_base;
166			struct draw_context;
167	root	1.7
168			extern struct timer {
169			static double now;
170			static double diff;
171
172			static void frame ();
173			timer ();
174			} timer;
175	root	1.11
176			#define MAX_EVENT_TYPES 10
177			enum event_type { TIMER_EV };
178			struct event {
179			event_type type;
180			};
181
182			typedef callback1<void, event&> event_cb;
183
184			class skedjuhlar {
185
186			public:
187			// only 10 types for now
188			private:
189			vector <list<event_cb> > event_lists;
190
191			public:
192			skedjuhlar () {
193			event_lists.resize (MAX_EVENT_TYPES, list<event_cb>());
194			}
195
196			void register_event_cb (const event_type &t, const event_cb &e) {
197			event_lists[t].push_back (e);
198			};
199			void send_event (event &e) {
200			list<event_cb> &l = event_lists[e.type];
201			for (list<event_cb>::iterator it = l.begin (); it != l.end (); it++) {
202			(*it)(e);
203			}
204			};
205			/*
206			void check_events () {
207			while (!events.empty ()) {
208			event &e = events.pop_front ();
209			list<event_cb> &l = event_lists[e->name];
210			for (list<event_cb>::iterator it = l.begin (); it !+ l.end (); it++) {
211			(*it)(e);
212			}
213			delete e; // ugly slow? hai hai..... 183G
214			}
215			}
216			*/
217			};
218
219			extern skedjuhlar main_scheduler;
220	root	1.1
221			#endif
222